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Discussion of precise voltage measurement

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Solartron 7150 Plus DMMs

DC
David C. Partridge
Tue, Oct 27, 2015 6:30 PM

I know they aren't strictly volt-nut fodder, but if anyone should be
interested, I've got a few of these up on UK eBay right now.

Cheers,
David Partridge

I know they aren't strictly volt-nut fodder, but if anyone should be interested, I've got a few of these up on UK eBay right now. Cheers, David Partridge
JP
John Phillips
Tue, Oct 27, 2015 8:10 PM

What should I expect to pay for a good Fluke 725A voltage divider?
I know that is kind of open ended but I need a ballpark figure

On Tue, Oct 27, 2015 at 11:30 AM, David C. Partridge <
david.partridge@perdrix.co.uk> wrote:

I know they aren't strictly volt-nut fodder, but if anyone should be
interested, I've got a few of these up on UK eBay right now.

Cheers,
David Partridge


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--

John Phillips

What should I expect to pay for a good Fluke 725A voltage divider? I know that is kind of open ended but I need a ballpark figure On Tue, Oct 27, 2015 at 11:30 AM, David C. Partridge < david.partridge@perdrix.co.uk> wrote: > I know they aren't strictly volt-nut fodder, but if anyone should be > interested, I've got a few of these up on UK eBay right now. > > Cheers, > David Partridge > > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > -- *John Phillips*
KP
Ken Peek
Wed, Oct 28, 2015 2:26 PM

I think you meant Fluke 752A, right?  I bought mine on the 'bay', for
about US$600 IIRC, but I had to wait for the right deal to get that
price.  These are US$20K+ instruments when new, so this is quite a
bargain.  Many cal-labs have chucked these in favor of their
self-calibrating Fluke 57xx calibrators, which [I think] is a mistake,
as the 752A has far better ratio specs for 1000V [0.5ppm] and 100V
[0.2ppm] than anything else I can find.  For low voltage, the Fluke 720A
Kelvin-Varley divider [or an HP/Agilent/Keysight 3458A] wins at
0.1ppm ...


---======

I *think* you meant Fluke 752A, right? I bought mine on the 'bay', for about US$600 IIRC, but I had to wait for the right deal to get that price. These are US$20K+ instruments when new, so this is quite a bargain. Many cal-labs have chucked these in favor of their self-calibrating Fluke 57xx calibrators, which [I think] is a mistake, as the 752A has far better ratio specs for 1000V [0.5ppm] and 100V [0.2ppm] than anything else I can find. For low voltage, the Fluke 720A Kelvin-Varley divider [or an HP/Agilent/Keysight 3458A] wins at 0.1ppm ... ========================================================================
JP
John Phillips
Wed, Oct 28, 2015 4:00 PM

​Sorry no... I am looking for a price for a Fluke 725A Kelvin-Varley
divider.​

On Wed, Oct 28, 2015 at 7:26 AM, Ken Peek ken.peek@diligentminds.com
wrote:

I think you meant Fluke 752A, right?  I bought mine on the 'bay', for
about US$600 IIRC, but I had to wait for the right deal to get that
price.  These are US$20K+ instruments when new, so this is quite a
bargain.  Many cal-labs have chucked these in favor of their
self-calibrating Fluke 57xx calibrators, which [I think] is a mistake,
as the 752A has far better ratio specs for 1000V [0.5ppm] and 100V
[0.2ppm] than anything else I can find.  For low voltage, the Fluke 720A
Kelvin-Varley divider [or an HP/Agilent/Keysight 3458A] wins at
0.1ppm ...


---======


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--

John Phillips

​Sorry no... I am looking for a price for a Fluke 725A Kelvin-Varley divider.​ On Wed, Oct 28, 2015 at 7:26 AM, Ken Peek <ken.peek@diligentminds.com> wrote: > I *think* you meant Fluke 752A, right? I bought mine on the 'bay', for > about US$600 IIRC, but I had to wait for the right deal to get that > price. These are US$20K+ instruments when new, so this is quite a > bargain. Many cal-labs have chucked these in favor of their > self-calibrating Fluke 57xx calibrators, which [I think] is a mistake, > as the 752A has far better ratio specs for 1000V [0.5ppm] and 100V > [0.2ppm] than anything else I can find. For low voltage, the Fluke 720A > Kelvin-Varley divider [or an HP/Agilent/Keysight 3458A] wins at > 0.1ppm ... > ======================================================================== > > _______________________________________________ > volt-nuts mailing list -- volt-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > -- *John Phillips*